Study Guide

Choose all of the materials that can conduct electricity.

• iron

• glass

• wood

• silver

• copper

Choose all the terms that describe a part of the life cycle of a plant.

• A) seed

• B) larva

• C) adult

• D) sprout

• E) chrysalis

There are a number of ways in which farmers can reduce the amount of soil erosion. Choose all the actions that reduce erosion.

• strip farming

• rotating crops

• increasing plowing

• contour farming

• adding fertilizers

Choose all of the statements that correctly describe properties of water.

• Liquid water holds its shape.

• Water changes to a gas as it boils.

• Ice becomes a liquid when it freezes.

• Water changes to a solid when it freezes.

• Solid ice changes shape with its container.

Choose the two common stages in which these insects cannot eat.

• adult

• egg

• larva

• pupa

Ocean water is salty. And it is saltier in some places than others. Choose all the events that would make ocean water in an area less salty.

• melting of sea ice

• input of river water

• precipitation of rain

• formation of sea ice

• evaporation of ocean water

Many animals have organs similar to those of humans, including the intestines, liver, pancreas, and stomach. Choose all of the processes that describe a function of the liver.

• makes insulin to balance blood sugar

• filters blood from the digestive system

• makes bile that helps to break down fats

• stores materials that the body does not need

• churns food and mixes it with digestive juices

Check all of the statements that describe a function of the skeleton.

• support the body and give it shape

• allow movement

• deliver oxygen to cells in the body

• protect the organs in the body

• deliver nutrients from food to cells in your body

Which process takes place when liquid water changes into water vapor?

• condensation

• transportation

• evaporation

• accumulation

When rocks are exposed to wind, rain, heat, ice, or waves, the rocks

• fold.

• erode.

• contract.

• melt.